0.04 2013-09-21
 - Add LICENSE file.
 - Add SIGNATURE file.
 - Add Test::NoWarnings to tests.
 - Add dependency for perl (based on Error::Pure).
 - Add missing example from doc.
 - Rename CHANGES to Changes.
 - Rewrite Changes file to CPAN::Changes::SPEC format.

0.03 2012-08-03
 - Fix bug in hash_array and callbacks.
 - Improve doc.
 - Rename variables in code to better names.

0.02 2012-08-03
 - Add hash_array() subroutine.
 - Code optimalization.

0.01 2012-06-22
 - First version.